Adolf martini



No. 625,344. Patented May 23, I899.

A. MARTINI.

SELF IGNITING CHIMNEY CAP.

(Application filed Dec. 22, 1698.)

(N0 Madam MM y M cums vqr zns co Pnovoumo" WASHINGTON n c UNITED STATES PATENT OFFICE.

ADOLF MARTINI, OF BERLIN, GERMANY SELF-IGNITING CHIMNEY-CAP.

SPECIFICATION forming part of Letters Patent No. 625,344, dated May 23, 1899.

Application filed December 22, 1898. Serial No. 700,012. (No model.) I

To (all whom it may concern.-

Be it known that I, ADOLF MARTINI, a citizen of the United States of America, and a residentof Berlin, in the Kingdom of Prussia and German Empire, have invented certain new and useful Improvements in Self-Igniting Chimney-Caps, (for which I filed a patent in Germany November 19 and December 5,) of which the following is a specification.

In cases where an ignition-pill is automatically removed from over the flame to a protected position by means of energy developed by the flame all devices serving such purpose involve certain characteristics.

By my invention not onlyis the gas ignited by the pill, but the pill is also removed immediately by means of the concentration of the gas-and-air mixture and the use of nearly the entire energy produced by the flame and by a swinging suspension of the pill. At the same time the apparatus is capable of controlling the force of explosion to any degree. These principles are shown in the sketches, in which Figures 1 and 2 are elevations showing, re-- spectively, the closed and open positions of the cap and the corresponding positions of the igniting-pellet.

The cover cl through its concave form concentrates the gas-and-air mixture, guiding it with full force to the pill 1. After ignition of the gas this cover is removed to a position as shown in Fig. 2, where it is retained partly by means of a counterweight e and partly by the current of hot air. The pill P must be hung from the bracket S, so that it is free to swing.

In case the pill P projects through the hole 0 it must be free to swing into a position as shown in Fig. 2. This cannot be accomplished if the pill is fixed not free to swing, since the cover cannot be raised through an angle of more than ninety degrees without preventing its returning to the original position, Fig. 1, by its own weight. Besides this a pill so suspended ignites more quickly than one immovable.

The cover d serves as a dust-protecting cap to the lamp when not burning. The force of explosion can be regulated by raising or lQW-' ering the rim R,leaying larger or smaller openings between the top of the chimney and the rim R for the escapement of the exploding gases in the moment of ignition and for the escapement of the heat and products of combustion during the time the lamp burns.

What I claim is- 1. In an automatic gas-ignition apparatus the combination with a lamp-chimney, of a ring, with openings in the side, a slightly curved cover, a'counterweight and a porous pill with finely-incorporated platinum or any material, having similar properties, substan* tially as, and for the purpose described.

2. In an automatic gas-ignition device the combination with a lamp-chimney and a metallic rim, with openings in the side, of a cap, consisting of a slightlycurved plate, said plate being jointed to said rim and balanced by a counterweight and having in its middle an opening; and a porous pill with finely-incorporated platinum or the like suspended in such a way as to rest ordinarily in said opening, substantially as and for the purpose described.

3. In an automatic gas-ignition device the combination with alamp-chimney, a metallic rim, with openings in the side, and a slightlycurved cover with oounterpoise and having in its middle an opening, of a bracket, fixed near the edge of said opening, and a porous.

pill with finely-incorporated platinum or similar material movably suspended from said bracket and projecting partly through said opening, substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

ADOLF MARTINI.

Witnesses:

ERWIN L. GoLDsoHMID'r, HENRY HAsPER. 

